STR analysis is a DNA profiling technique that makes use of the fact that different people have ________
A) different numbers of repeats of short DNA sequences at certain sites in the genome
B) different alleles for many genes in the genome
C) different restriction fragments
D) different CODIS DNA sequences
A
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What would the result be if histamine and nitric oxide were NOT secreted during a puncture injury?
A. The blood vessels would dilate. B. The blood vessels would be more permeable. C. The blood mast cells would constrict. D. Healing would be slower. E. Healing would not take place at all.
Which term refers to the collection of branched hyphae in a fungus?
a. mycelium b. spore c. mushroom d. mycose
Choose the most appropriate answer for each.
A. triploidy B. translocation C. monosomy D. duplication E. trisomy F. deletion G. inversion
Which of the following is a difference between a viroid and a virus?
A. Viroids infect only plants while viruses infect only animals and prokaryotes. B. Viroids are alive and viruses are not. C. Viroids are not infectious particles and viruses often cause disease. D. Viroids are composed solely of nucleic acid while viruses are composed of nucleic acid surrounded by a protein coat. E. Viroids contain some genes important for their own replication while viruses rely entirely on host cell enzymes for their replication.